So the point of this thread was to show everyone the ratio of the lips and chin, right? but your using two very differen't angles and distance,
If I took a picture of my lips and chin tilting my head up, then took it tilting my head down from farther away, the ratio would be different.
I dun get it. Why would you compare two pics taken at different perspectives, angle's, and distance from camera?
You can't prove anything from that, and it seems all this is doing is comparing his lips to chin with different expressions on. Fail thread.
Unless your neck is about the size of your head, like a giant fat roll, there would be shadows. Notice how his face has shadows right up to the edge of the chin, you can clearly tell where the chin ends. A tilted head would still have ~ the SAME RATIO, basic math. Do you even know what similar triangles are? The ratios comparing each picture would be the same, unless the angles are different and on the opposite center of focus, which is impossible.
I've done more than my fair share of 3d modeling of faces. I could write a facial recolonization system. I think you need to understand what a ratio is.